US PATENT SUBCLASS 220 / 203.19
.~.~.~ Specified valve structure provides a diverse function (e.g., leakage preventing, lock releasing)

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


220 /   HD   RECEPTACLES

200  DF  CLOSURES {45}
202  DF  .~ With condition responsive vent or valve {1}
203.01  DF  .~.~ Responsive to pressure {10}
203.19.~.~.~ Specified valve structure provides a diverse function (e.g., leakage preventing, lock releasing) {3}
203.2  DD  .~.~.~.~> Float or gravity valve
203.21  DF  .~.~.~.~> Ball valve
203.22  DF  .~.~.~.~> Locking feature

DEFINITION

Classification: 220/203.19

Specified valve structure to provide a diverse function (e.g., leakage preventing, lock releasing):

(under subclass 203.01) Device wherein one or more valves are provided, and at least one of the valves has a specific structure which provides an auxiliary function, such as preventing leakage of receptacle contents, or providing means to release a safety lock.

(1) Note. To be classified in this subclass, the diverse function must be something other than that which is inherent to the valve structure, such as sealing the receptacle during normal operation and venting and valving the receptacle.

SEE OR SEARCH THIS CLASS, SUBCLASS:

316, for a closure having pressure responsive means to release the closure from its closed position.

SEE OR SEARCH CLASS

137, Fluid Handling,

38+, for a fluid handling system which responds to a change in the position of the system as a whole.